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Finding the Fourth Proportional to 279,937,987.60, 419,906,981.40 and 177,397,430.80

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Solution

The fourth proportional to 279,937,987.60, 419,906,981.40 and 177,397,430.80 is: 266,096,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,987.60 : 419,906,981.40 = 177,397,430.80 : x
  2. Step 2: Convert to fraction form
    279,937,987.60/419,906,981.40 = 177,397,430.80/x
  3. Step 3: Cross multiply
    279,937,987.60x = 419,906,981.40 × 177,397,430.80
  4. Step 4: Simplify right side
    279,937,987.60x = 74,490,419,675,343,392
  5. Step 5: Solve for x
    x = 74,490,419,675,343,392/279,937,987.60
  6. Step 6: Final answer
    x = 266,096,146.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.